Colter attachment for plows



June 10, 1930. c. MARCHAL COLTER ATTACHMENT FOR PLQWS Filed June so; 1926 z 4/ ////r z ATTOR N EY Patented June 10, 1930 v u awn-'1 lifts CLARENCE MARGI-IAL, OF PLAINIEIELD, INDIANA COLTER ATTACHMENT FOR IPLOWS Application filed. June 30,

My present invention has reference to im provements in plow colters, wherein provision is made for breaking clods and lumps to reduce the soil to as fine a condition as possible in order to secure the best results in iarvest.

In carrying out my invention it is my aim to provide a plow with a jointer which subdivides the slice at or near the cutting edge of the share, but which will not interfere with the action of the mold board in turning the subdivided slices and which will not perceptibly increase the draft of the plow as the jointer is of the rotary type.

A. further object is the provision of a colter which includes a revoluble disc or jointer for slicing and subdividing the soil at the rear of the plow, and a second disc colter for out ting trash and the like from the top of the soil, there being a novel mount for both discs to insure the free turning of the said discs and the proper lubrication of the bearings therefor.

To the attainment of the foregoing and other objects which will present themselves as the nature of the invention is better understood, the improvement also resides in certain other features of construction, combination and operative association of parts, a satisfactory embodiment of which is disclosed by the drawings which accompany and form part of this application.

In the drawings:

Figure 1 is a top plan view of the improvement.

Figure 2 is a sectional view through the mount for the jointer.

Figure 3 is a similar view through the mount for the colter.

My improved attachment comprises a ro tary disc colter 1. Passing centrally through the hub of the colter there is the reduced end 2 of a shaft 3. Screwed on the end 2 of the shaft and contacting the outer face of the colter hub there is a nut 4. By this arrangement it will be seen that the colter 1 may be readily attached to or removed from the shaft 3.

The shaft 3 is received in an opening 5 on the barrel end 6 of the casting 7 that is 1926. Serial No. 119,691.

attached to the plow. The barrel 6 has its ends provided with enlarged openings 8 and 9, respectively, which, of course, communicate with the bore 5 of the said barrel. In these openings there are wooden bearings 10 and 11 respectively. Each bearing has an oppositely directed cone-shaped opening therethrough, and in these openingsthere are received cones 12 and 13 which are fixedly secured on the shaft 8. A key 1% secures a steel core on the shaft and in depressions in the wooden bearings 10. The shaft is threaded outward of the bearing 13 only and the said bearing is free to move in and out on the shaft. The end of the shaft has arranged thereon a washer which is contacted by a nut 15 that is screwed on the inner end of the said shaft. The outer face of the casting 7 has an enlarged annular depression 16 that communicates with its opening 8, and screwed in this opening there is the outer disc, while between the discs there is arranged a compressible washer 17. Screwed on the outer end of the barrel 6 there is a cap 18. This cap is designed for the reception of a lubricant which, of course, is imparted to the shaft and its bearings.

Secured to and depending from the casting 7 there is a hanger 19. The hanger has its outer end round in cross section and is received in a socket 20 in a casting 21. Elements 22 secure the hanger in the casting. Thecasting has a ball headwhich is directed at an upwardly and outward angle, the said head being indicated by the numeral 23. The outer face of this head is flat and the said head is formed with a round opening 24 that enters from its said flat face. The rear of the opening is reduced, as at 25, and in the reduced portion there is a transversely arranged plate 26. In the opening 25 there is a bearing 27 which is preferably of wood, a spline or rib 28 holding the hearing from movement in the opening. The cross sectional concavo convex jointer colter is indi- 95 cated by the numeral 29. FiXedly secured on the jointer, at the center thereof, there is a flange 30 formed on one end of a frusto conical hub 31, the hub 31 being received in a frusto conical opening in the bearing 27.

Passing centrally through the hub 31 thereis a bolt 32 that also passes through the plate 26 and screwed on this bolt there is a nut 33. Lubricant is delivered into the bore 25 of the head 23 by means 34. Thus it will be noted that the mount for the jointer is effectively lubricated.

The bearing 27 may be either of wood or metal and the jointer 29 is arranged behind and at an angle with respect to the colter 1.

It is believed that the foregoing description when read in connection with the accompanying drawings will fully set forththe simplicity and advantages of my construction to those skilled in the art to which such invention relates, but it is, of course, to be understood that I do not wish to be'restricted to the precise details of construction herein set forth and hold hyself entitled to make such changes therefrom as fairly fall within the scope of what I claim. Having described the invention, I claim In a colter, a support having a cylindrical bore therethrough with counter bores at the ends thereof, cylindrical wooden bearing members mounted within the counter bores and having frusto-conical openings therein converging toward each other,'a shaft extending through the bore and beyond one side of 30 the support, said side of the support having an internal annular shoulder, spaced disks mounted on the projecting end of the shaft, the innermost disk being loosely mounted on the shaft and bearing against said shoulder, absorbent material arranged between the disks, the outermost disk being threaded 0n the shaft and acting to adjust the position of said cone, the other. end of the shaft being threaded, a cone mounted on the threaded end of the shaft and'received by the adjacent bearing member, said last mentioned cone having a key-way slot, a key received by said slot engaging said shaft, and a nut screwed on the threaded end of the shaft to hold the key in position and coacting with the second named cone for adjusting the latter in the bearing.

In testimony whereof I affix m signature.

CLARENCE MA OHAL. 

